/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.spark.sql.execution import org.apache.spark.sql.ExperimentalMethods import org.apache.spark.sql.catalyst.catalog.SessionCatalog import org.apache.spark.sql.catalyst.optimizer.Optimizer import org.apache.spark.sql.execution.datasources.PruneFileSourcePartitions import org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaPruning import org.apache.spark.sql.execution.python.{ExtractPythonUDFFromAggregate, ExtractPythonUDFs} class SparkOptimizer( catalog: SessionCatalog, experimentalMethods: ExperimentalMethods) extends Optimizer(catalog) { override def defaultBatches: Seq[Batch] = (preOptimizationBatches ++ super.defaultBatches :+ Batch("Optimize Metadata Only Query", Once, OptimizeMetadataOnlyQuery(catalog)) :+ Batch("Extract Python UDFs", Once, Seq(ExtractPythonUDFFromAggregate, ExtractPythonUDFs): _*) :+ Batch("Prune File Source Table Partitions", Once, PruneFileSourcePartitions) :+ Batch("Parquet Schema Pruning", Once, ParquetSchemaPruning)) ++ postHocOptimizationBatches :+ Batch("User Provided Optimizers", fixedPoint, experimentalMethods.extraOptimizations: _*) override def nonExcludableRules: Seq[String] = super.nonExcludableRules :+ ExtractPythonUDFFromAggregate.ruleName /** * Optimization batches that are executed before the regular optimization batches (also before * the finish analysis batch). */ def preOptimizationBatches: Seq[Batch] = Nil /** * Optimization batches that are executed after the regular optimization batches, but before the * batch executing the [[ExperimentalMethods]] optimizer rules. This hook can be used to add * custom optimizer batches to the Spark optimizer. */ def postHocOptimizationBatches: Seq[Batch] = Nil }